
#-*- coding: utf -8 -*-

import sys

f = open("teste.txt", "w")
s = "treta"

for k in range(10): f.write(s); f.write("\n")
f.close()

f = open("teste.txt", "r")
f.seek(5)
print f.tell()

x=f.read(10)
print x

c=0

for line in f:
    print "{0}:".format(c), line
    c += 1
f.close()

with open("teste.txt", "r") as f:
    x = f.readline()
    if x == 'treta\n': print "voila"
